This nearly drove me crazy(er)! I purchased a Bengal kitten last November(2019) and he had a lot of health issues, but on top of those he would perch on the edge of all the water bowls and urinate in them!! I dealt with the healt problems but his "use" of the water bowl I couldn't handle, nor could my two other cats! FF to March 2020, I was getting company and in preparation I was cleaning my spare bathroom. When I lifted the toilet lid, my kitten jumped up on the toilet, positioned himself and proceeded to urinate like a pro!!! Apparently the people I bought him from must have been teaching him to use a toilet instead of a litterbox!! Now if he'd just defecate in there too!!! A happy ending for a bizarre behavior!!